The thesis focuses on the place of the Ukrainian Greek-Catholic Church during World War II– one of the most tragic periods in the world history. At the time of the war, the population of western Ukraine, which was Greek-Catholic in its majority, experienced occupation of two regimes, Soviet and Nazi, which set up challenges for the locals. The thesis will focus on the relations of the Church with Soviet state and present state policies towards the UGCC, which interfered with its normal life. In this context, official church policies will be presented, and the methods church leaders used to “normalize” the situation will be described. This discussion will lead to deeper analysis of the adaptation of official church policies by local Greek-Catholic priests. The influence of national and religious identity on clerical understanding of politics will be taken into account. At this point, I will argue that three groups of clergy can be identified on the basis of their response to Soviet policies. What are these groups? How did average priests adapt to new realms? Why did they act in the way they did? All of these questions will be answered through the analysis of primary NKVD-KGB documents found in a couple of major Ukrainian archives.